▻PU/genuine leather options ▻Yellow resistance, abrasion resistance, insect resistance, hydrolysis test ▻High density foam ▻Solid wooden arm,PU armrest top pad ▻Tilting mechanism ▻SGS certified gas lift,grade 3 ▻¢690MM solid wood base weight capacity 1134KGS，ANSI BIFMA standard ▻2.5 inch SGS certified PU caster，98,000 times no damage ▻Visitor chair：high density foam,bent wooden frame ▻High back:width 670MM,seat depth 510MM,seat height 470-540MM,total 1150-1220MM Low back:width 640mm, seat depth 460MM,seat height 470-540MM,total 1100-1070MM Visitor:width 540mm, seat depth 480MM,seat height 470MM,total height 970MM ▻High back chair package：2pcs/2ctn，0.243m3/pcs, G.W：29kg/pcs Low back chair package：2pcs/ctn，0.22m3/pcs, G.W：27kg/pcs Visitor chair package：2pcs/ctn，0.193m3/pcs, G.W：17kg/pcs